1 Chronicles 15:12

15:12 He told them: “You are the leaders of the Levites’ families. You and your relatives must consecrate yourselves and bring the ark of the Lord God of Israel up to the place I have prepared for it.

1 Chronicles 23:13

23:13 The sons of Amram:

Aaron and Moses.

Aaron and his descendants were chosen on a permanent basis to consecrate the most holy items, to offer sacrifices before the Lord, to serve him, and to praise his name.